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COMPENSATION OF LOW-FREQUENCY BEAT CURRENT IN TRACTION INVERTER DRIVES USING THE VOLT-SECOND EQUALISATION METHOD
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| Author(s) |
Z. Salam; C.J. Goodman |
| Abstract |
This paper describes the behaviour of an inverter-induction motor drive system fed
by a fluctuating DC link voltage. The modulation process between the inverter switching function and the fluctuating DC link generates beat voltages that produce large beat currents as the difference frequency approaches zero. This phenomena causes serious torque pulsation and excessive motor heating. To correct this problem, a new compensation method based on
volt-second equalization is proposed. A low-power test rig has been constructed to validate the effectiveness of the compensation method. |
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| Filename: | Unnamed file |
| Filesize: | 604.5 KB |
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| Type |
Members Only |
| Date |
Last modified 2015-12-10 by System |
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